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13C NMR data for chlorine- or nitro-substituted azomethine dyes

✍ Scribed by Rainer Haessner; Lothar Hennig; Jerzy Gaca

Publisher: John Wiley and Sons
Year: 1990
Tongue: English
Weight: 189 KB
Volume: 28
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1260280915

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✦ Synopsis

Abstract

The ^13^C NMR spectra of 1‐aryl‐substituted 3‐methyl‐2‐pyrazolin‐5‐ones and their azomethine dyes have been recorded and assigned. ortho‐Substituents (Cl and NO~2~) on the phenyl ring in the 1‐position of the pyrazoline moiety show a small influence on the chemical shift of the azomethine bond carbon atom, C‐4.

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